Oil well rig



May 7 1940 i M. E. BoLLEs 2.199.873

0 IL WELL RIG Filed OC.. 3, 1938 6 Sheets- Sheet 2 Merz/zb E. Balles M. E. BOLLES OIL WELL RIG Filed Oct. 3, 1938 6 Sheets-Sheet 3 May 7, 1940.

In ventor M/wim ELE/Zes ornvys M. E. BOLLES May 7, 1940.

OIL WELL RIG Filed Oct. 3, 1958 6 Sheets-Sheet 4 I x A* r n III" |||l Inventor Marvin EE0/[e5 May .7, 1940 AM. EfBoLLEs oIL WELL RIG Filed 001;. 3, 1938 6 Sheets-Sheet 5 .MrvznMa/es 0 By -aMJ A orneys May 7. 1940 M. E. BoLLEs 2,199,873

' oIL wELLYnIG f Filed Oct. 3, 1938 6 Shgecs-Sheet 6 In ventor ervan ZBQZQS A torneys Patented May 7, 1940 UNITED STATES. PATENT QFFICE ol'L WELL RIG Mervin Balles,v Oil City, Pa. applicati@ ocultar4 a, 199s, serial No.. /z3`:9,079v

17 claims.y (c1. c55-11) i Figure 'I `is randetail. ofthe.. stop arm for the The present invention relates to drilling rigs for oilrwells and has for itsprimary object toprovide a motor driven friction drive means arranged for selective driving engagement with the double band Wheels which supply the motion to the Walking beam or with the double bull lwheels on which thev drilling cable is wound.

`A:further.important object of the invention is to lprovide a sand reelmounted for movement into and out ofoperative engagement with the friction drive means. i y

Afstill furtherimportant object is to provide a hydraulic feed adaptedv for raising or lowering the tools inthe Wellin -piace of they conventionall purpose. v

Another object isto provide indicating means arranged to showthe extent of movement ofthe hydraulic.y feed..

A further object is to providea portablefoil Well rig of this character. which includes .a power plant arranged forY driving the.frictionuoperating means for the bull wheel. as well as the. band,

wheel and valsov including means for supplying fluid under pressure `for operating the hydraulic feed.

provide automatic brake means for the bulLwheel, the band Wheel andthe sandreel which are arranged in braking position when out of ydriving engagement.

A still furtherobject isxto provideanA appa-y tails ofconstruction and operation as morefully hereinafter. described and claimed, reference beparts throughout, and in which.

Figure 1 is a side elevational .View showing one.

side of the machine. y; 45 Figure 2 is a similar view showing the opposite side thereof.

Figure 3 is' a top plan view with' parts brokeny away and shown in section.

Figure 4 is a detail of the mountingfor the pair of friction drive wheels. Y

Figure 5 is an end elevational view thereof, vwith parts broken away and shown in section.

Figure 6 isa top plan view of the cam forshifting the'friction drive wheels' into their respective' 55 operating positions.

typeof temper screwy ordinarily employed forthis It is also4 anl object ofthe present inventionfto.

performance, and otherwise well adapted forthe inghad to the accompanying drawings forming part hereof, wherein like numerals refer to like shaft of the friction drive wheel.

Figure 8 isa top plan view-of the Yhydraulic feed, with parts broken awayand shown section.

Figure'Qis a longitudinal sectional View of the cross head for the hydraulic plunger,r taken substantially on a line 3.-!) ofv Figure 10.

Figure 10 is a. transverse sectional view. of the cross head vtaken substantiallyv on a line Ill--IIIy of Figure 8.

Figure 11 is a detail of the control valve for thehydraulic feed.

Figure 12 is a fragmentary front elevational view of the indicator for the hydraulic feed..

Figure 13 vis a detail of the cross beam connecting the ends of the cable for-the .hydraulic feed with the clamp for the drilling cable.

Figure14 is a detailY of theloose. connection lbetweenv the brakeof the band wheel and the friction drive control means.

Figure 15 is a detail showing the movable drive connection `for the sand reel, and'.y i

Figure 16 is a diagrampfthe fluid pressure means for the hydraulic feed.

Referring now to the drawings in detail, the numeral 5 designates a chassis frame supported on wheels 5, the frame providing a support for a power plant I as well as a-pair of upstanding posts 8 positioned at opposite sidesof the frame and having a walking beam 9 pivoted as at I0 on the upper portion of said post. Rising from the chassis are also `a plurality of upstanding frame members I I supporting an upper horizontal frame member I2. at theupper portion thereof. The chassisv also includes a laterally projecting frame member i3, all of said framestructure providing a support for the operatingy mechanism to be presently described.

Journaled on the frame is a transversely extending. shaft: I4 adjacent each end ofwhich is keyed a band wheel.I5 andto each of which a pitman I6 is eccentrically `connected at one end for driving thewalking beam.

J ournaled in the post 8 is a transversely extending shaft I'I having. at each end thereof .a bull wheel I8, said ,bull wheelbeing connectedby a drum I9. f'

The power plant 'I operates a telescopic drive` shaft 20 for driving a pair of friction wheels v2I through a suitable gear connection (not shown). cont'ainedwithin a housing 22 and from which laterally extending shaft housings 23 extend at opposite sides and upon the opposite ends of which the vwheels 2 I are supported as clearly illus'- trated in Figures 5 and 16 of the drawings. The wheels 2| may be of any suitable type, such as pneumatic or solid rubber tires, or of any other suitable friction material such as leather or the like and are positioned between the adjacent band wheels. I5 and bull wheels I8 at the respective sides of the apparatus for selective friction gripping engagement with either the bull wheel or the band wheel.

The housings 23 are supported'on the upper ends of posts 24 through a ball and socket connection 25 at the upper ends of the posts, one

of the posts being positioned adjacent each end",- of the housing, the lower end of the post being v connected to a transversely extending rockY shaft 26 journaled in bearing brackets 21 'secured' to the chassis 5. The housing 22 is also supported upon an upright member 28 by means of"a ball and socket connection 29 at its upper end, the lower end of the upright member also. having a ball and socket connection 30 with Ythe chassis 5 as clearly illustrated in Figure 5 of the drawings.

Also adjacent the outer end of the housings 23 is an upstanding adjusting rod 3| having the lower end thereof pivoted as at 32 to the chassis and provided withv vertically spaced openings 33 for selectively attaching one end of a connecting rod 34, the opposite end of the rod being secured to a plate 35 carried by the housing 23. Also selectively secured to one of the openings 33 is one end of a rod 36, the other end of the rod being threaded and inserted through a bracket 31 and adjustably secured thereto by lock nuts 38. The bracket 31 is formed on a cam housing 39 within which a cam 4I) is rotatably positioned, said cam being eccentrically mounted on a transversely extending shaft 4I journaled in brackets 42 secured to one of the upright frame members.

Onel end of the shaft 4| is provided with' a pinion gear 43 engaged by a rack' 44 movable in a guide bracket 45 and to which is journaled a roller 46 engaging the upper surface of the rack to maintain the ra'ck in engagement with the gear, as shown morey clearly in Figure 1 of the drawings. j.

One end of the rack l44 is pivotally connected to a lever 41 pivoted as at 48 to the frame, said lever embodying adetent 49 engageable with a notched quadrant 50 to,secure the wheels 2| in a neutral position as shownl in Figure 1. Also secured in one of the openings 33, adjacent the top of the upstanding member 3|, is a brake rod 5| loosely inserted through an opening 52 in a brake operating lever 53, the rod 5I having a collar 54 adjustably secured thereon for engagement with the lever to release the brake shoe 55 from engagement with the band wheel I5. The brake shoe 55 is yieldably held in brake applying position by means of a spring 56 secured. to the brake lever. The brake is released upon a movement of the rod-3| and friction wheels 2| in a direction for engaging the brake wheels l5, while a disengagement of the friction wheels retracts the rod 5|, thus permitting the spring 56 to apply the brake.

The bull wheel I8 is provided with a manually operated brake which includes a brake band ,51 anchored at one end as at 58 and connected `at its opposite end by a .pivoted bell crank 59 `to which one end of a link 60 is pivotally attached, the other end of the link being pivotally secured to an arm 6| which has one end yieldably held The spring 62 is adjustably secured as at 64 to one of the frame members and the arm 6I is arranged with respect to the lever so that the spring will hold the lever against accidental movement in either its brake applying or brake releasing position by swinging the pivoted end of the armV 6| past the pivotal center of the lever when the latter `is moved in either direction, as will be apparent from an inspection of Figure 1 of the drawings.

A sand reel 65, shown in detail in Figure 15 of the drawings, is journaled on frame members 66,

one end of the reel having a shaft extensionA 61` provided with a universal joint 68 and on which a floating drive wheel 69 is secured. The hub of the wheel is journaled in a bearing 10 formed intermediate the ends of a pivoted arm 1|, the

raised position by a coiled spring 12 for maintaining the wheel in engagement with a fixed brake.

In the operation of the mechanism heretofore Y described it will be apparent that either thep'air of band wheels I5 or` the bull wheel I8 may ibe selectively driven by the pair of Africtionj'drive wheels 2| through Ythe manipulation 'of the". lever 41 which serves to rotate the shaft 4I throughv the rack 44 and pinion 43 in the desired direction,

thus causing the longitudinal shifting of the pair of wheels 2| through the connection thereofwith'. the shaft 4| through( the cams 40. The band" wheels 5 accordinglymay be driven' to `supply the desired motion to the Walking beam 9,01' the bull wheels may be driven for winding'thedrilling cable thereon. A reversing mechanism for the b ull wheelsl is also provided which comprises a wheel 18 jourl free end of the arm being yieldably held in a naled on a pivoted lever 19 and adapted for mover v ment into a wedging position with respect to .one of the bull wheels I8 and its associated friction drive wheel 2|, as clearly shown in Figure I L'of the drawings. The drilling cable is operated through the walking beam .in the usualmanner and is connected thereto through a conventional cable clamping mechanism 8| suspended fromj'a cross bar 82 having a pair of cables 83 attachedl to the respective ends thereof. The pair of cables 83 are trained over pulleys 84 journaledv at they outerend of the pair of spacedlongitudinally extending arms 85 of the walking beam, the cables extending toward the other end of the walking beam and are attached through connectors 86 to adjusting screws 81 secured to the opposite end of a cross head 88. The cross head is provided with a pair of spacedparallel sleeves 8,9 slidably mounted on guides90 suitablyfsecured'to the.

the 'front and rear sides of ,the'cross head 88 are coiled springs 94, one end of each ofthe springs being suitably anchored to .thefpiston 93.

-The piston 93 has a working fitv in a cylinder 95 secured to the drilling rig frame, the end of the cylinder remote from the piston having an-'oil pipe 96 con-nectedthereto leading toa pump 91, the pump being driven through asshaft-- having a friction wheel 99 secured thereto and movfable/'into and-out of -'engagement with laz-friction .engagement -with Lthe :power :.plantffor "selective f drive wheel |500 fmounte'd lon 'thedrivef-shaft120. The lsha'ft 98 is provided with fa :universal'lU-I,

the shaft being movable laterally by means-of a lever |02 suitably connected 'fto the'shaftand to a control lever |03 through alink lM'andlbell vcrank lever |05'.

One side of the pump 91'also VJhas 1an :oil'feed 'pipe lH36 connected thereto leading from -an `oil tank |01. A pressure release Apipe |08 also rhas one end connected to Ythe pipe 96 and-extends to theoil tank with a control valve 09 interposed therein operated by a lever |.|0. The pipe 96, ata point-between'the pump U97 and the pressure "release pipe -|08 also has a --check Valve V||| chamber 3 in its upper portion -which lacts as an air cushion and cooperates with the 'springs -94 to prevent jarring ofthe piston'93 upon release cf the pressure.

Adjacent the end of the cylinder 95, opposite from the pipe 96 is connected one end of a pipe H4 also leading 'to the oil tank |01 l'and which serves as a return'line from the cylinder to the oil tank to prevent the lpump 91 yfrom creating excess pressure in the, cylinder which would cause the projection vof the Apiston 93 beyond the connection of the return pipe |14.

Connected to the piston 93, adjacent its outer end, is one end of a wire cable ||5 which extends toward the opposite end of the machine adjacent the oil pump control lever |03 and the pressure release lever and has its opposite end attached to an indicator H6 movable along a scale I1 secured to the frame of the machine whereby to indicate the extent of movement of the piston 93 and as a consequence, to indicate to the operator .the extent of raising or lowering movement of the cable 00. A weight 8 is also attached to the wire l to take up slack therein.

In the operation of the hydraulic feed in order to raise the feed or drill bit, the operator moves the friction drive wheel 99 into operative engagement through the lever |03 causing the pump to move the piston 93 outwardly to raise the drill bit the desired amount. Likewise the feed may be lowered any desired amount by opening the bleed valve |09.

The double walking beam construction is of particular advantage in that it enables the pulling and baling between the beam without interference thereby. The walking beams are also provided with the usual spudding wheels I I9.

The other end of the shaft is provided with a lateral arm 4| adapted for swinging with the shaft into upper and lower positions as shown by the dotted lines in Figure '7, into engagement with one of the frame members to limit movement of the/shaft. Adjustable screws 4|" are carried by the frame to regulate the stopping position of the arm.

Having thus described the invention, what I claim is-' 1. A drilling rig comprising an engine drive shaft, a bull wheel and a band wheel and pneumatic friction drive means having driving connection with the drive shaft and mounted for bodily movement independently of the drive shaft for selective engagement with said wheels.

2. A drilling rig comprising a power plant. a bull wheel and a band wheel and a floating friction drive Wheel having telescoping drive shaft 'movement Tinto 'operating engagement with vsai'cl wheels.

.3g-A drillingrig comprising-a bull wheel vand a band wheel, friction drive means selectively en- (f5 Ygageable therewith and brake means forone of vthe wheels automatically actuated into brake y"applyingposition vby the disengaging movement of the friction drive means with said one wheel.

v'4. A drilling rig comprising an engine drive n10 shaft, a `pair of driven bull Wheels, ya ypair` of driven band wheels land a pair of friction drive wheels "having '-telescoping drive shaft engagement Iwith 'the drive shaft and mounted for simultaneous bodily movement into operative en- 1156 gagement with onepair of said driven wheels.

5. A drilling rig comprising an engine drive shaft, a pair of bull wheels, a pair of band wheels,

va pair of 'floating friction drive `wheels having telescoping v`vdrive shaft engagement with the 0 drive shaftland means for selectively moving said drive wheels vinto and'out of driving engagement tion drive wheels having telescoping drive shaft engagement with the vdrive shaft and movable into and out of drivingengagement with the respective pairs of bull and band wheels and brake 430 applying means for one of said Wheels normally maintained in braking position and released by the movement of the drive wheels into driving engagement with said one pair of wheels.

7.. A drilling rig comprising a pair of bull wheels, a pair of band wheels, a pair of swingably mounted pneumatic friction drive wheels adapted for selective engagement with said bull and band Wheels and an engine drive shaft operatively connected to the friction drive wheels, said drive wheels being movable longitudinally with respect to said shaft.

8. A drilling rig comprising a pair of bull wheels, a pair of band wheels, a pair of pneumatic friction drive wheels and a swingable mounting for the drive wheels for selectively moving the same intofengagement with the bull and'band wheels and comprising a horizontal rock shaft and supports rising from the rock shaft, said drive wheels being swiv'elly mounted on the upper ends of said supports.

9. -A drilling rig comprising a pair of bull wheels, a pair of band wheels, a sand reel and pneumatic friction drive means for said bull and band wheels and said reel, said drive means being selectively movable into driving engagement with the bull and band wheels and said sand reel including a friction drive wheel having bodily movement independent of the reel and being movable into operating engagement with the drive means. y

10. A drilling rig comprising a pair of bull wheels, a pair of band wheels, a sand reel and pneumatic friction drive means for said bull and band wheels and said reel, said drive means being selectively movable into driving engagement with the bull and band wheels and said sand reel including a friction drive wheel having bodily movement independent of the reel and being movable into operating engagement with the drive means, and brake means for said wheels and reel and normally retained in braking position.

11. In a hydraulic feed for drilling rigs comprising a cylinder having a fluid pressure feed line attached thereto, agpiston llalvill'-.t 'Working fit in the cylinder, a cross-head on-fthefouterend of the piston, and spring checks carried bythe piston: and engaging opposite ends of the crossto one end of the cylinder and a -pressure release line connecting the cylinder adjacent its other end to the reservoir and adapted to provide an open circuit for the uid between the pump and the reservoir upon a predetermined pressure operated movement of the piston.

13. A drilling rig comprising a pair of bull Wheels and a pair of band wheels mounted on parallel shafts, a pair of pneumatic friction drive wheels rockably mounted between said bull and band Wheels and adapted for selective engagement With one pair of said wheels, a power plant, and a drive shaft extending in a direction toward jthe friction wheels and operatively connecting said Wheels with the power plant.

14. A drilling rig comprising a pair of bull wheel and a pair of band Wheels mounted on parallel shafts, a pair of friction drive wheels rockably mounted between said bull and band wheels and adapted for selective engagement ,with one pair of said wheels, a power` plant,- and a telescoping drive shaft forming a direct driving 16. Avv drilling rig comprising a pair of bull wheels and a pair of band Wheels, said Vpairs of,

centric to the support of the friction drive wheel. f

Wheels being arranged on parallel shafts, a pair of wheels having pneumatic tread surfaces and movably mounted for frictionally engaging the bull and band wheels and means for driving said pneumatic wheels.

.y 17. A` drilling rig comprising a pair of bullwheelsand a pair` of band Wheels, said pairs of wheels being arranged on parallel shafts, a pair of wheels having pneumatic tread surfaces and mOi/ably mounted for frictionally engaging the; bull and band wheels and means for continuously driving said last named wheels during engagement or disengagement thereof.

MERVIN E. BOLLES. 

